Question

In a class of 56 students, the number of boys is 2/5th of the number of girls. Find the number of boys and girls.

Answer 1

let the number of girls be x
no. of boys=2x/5
x+2x/5=56
7x/5=56
x=56×5/7
=40 girls
boys=2×40/5
=16

Answer 2

Step-by-step explanation:

Total no. of students - 56

Let the no. of boys be - y

let the no. of girls be - x

now according to given conditions -

x+y = 56 -----------(1)

y = 2/5 x (as the bumber of boys is 2/5 times that of girls )

Bow substitute the value of y in equation ( 1 )

x+2/5x=56

5x+2x/5=56

7x/5=56

7x=56×5

x=280/7

x= 40

Y=56-40

= 16

Hence the no. of boys is 16 and no

of girls is 40